New York nanny pleads not guilty to murder

NEW YORK -- The New York City nanny charged with killing two children in her care plead not guilty.

Yoselyn Ortega is accused of stabbing a 6-year-old girl and a 2-year-old boy. Police said when the children's mother came home on the night of Oct. 25, she found the kids dead and she saw Ortega stab herself with a kitchen knife.